ei8htohms
8555
interesting/good to know
Mar 13, 2009,12:55 PM
Hi Don,
Good to know you can restake without roundness issues. I've never tried it myself but I'm sure I'll have to some time. I'm sure the microgear teeth assist in mitigating any running inconsistencies that minor eccentricities might otherwise present.
When I was in school we came to believe that most ETAs used CuBe wheels, but now that I think about it, we mostly worked on 2892s. I wonder if different grades or just different calibers use different materials for the wheels? Yes, if you've ever trued CuBe wheels you'd definitely know if you were working with them rather than brass.
Looking forward to the next installment!
_john
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The Making of the Dresdener Regulator, Part 3 of 4
By: Kong : March 12th, 2009-09:13
Please Click here for Part 1 Please click here for Part 2 More Parts Finishing Parts finishing continues with the wheels. Here we see the wheels as delivered by ETA, the form stamped, the teeth cut and then flash gold plated to prevent corrosion; quality ...
Fascinating..
By: BDLJ : March 12th, 2009-20:19
Great report, Kong and Fantastic work, Don. One question. The crown, what material is it? I may have missed it in the text, but the only reason I can think of for casting before machining is that it's a precious metal of some sort, hence the need to minim...
Casting
By: DonCorson : March 13th, 2009-12:30
Hi BDLJ ! The reason I do casting is because after casting the work that remains is simple turning and hand work. I do not need a big CNC for a quarter of a million with a complicated program to mill the case or even the 10s of thousands of CHF of investm...
very cool! a question and a comment
By: ei8htohms : March 12th, 2009-20:22
Hi Don, This is a great series and highlights how much work you're putting into these pieces. Keep up the good work! How do you maintain or re-establish concentricity between the pinions and wheels after dismounting/remounting them? Do you top the wheels ...
Wheels
By: DonCorson : March 13th, 2009-12:11
Hi John, I have not had problems with concentricity after restaking the wheels. I chuck them on the pinions in the lathe and check for that. A big problem is that they are no longer really flat and it takes forever to get them flat again. As far as I can ...
Thanks very much Kong and Don! Another question for Don,
By: AnthonyTsai : March 12th, 2009-21:01
Will you ever try gilt frosted finishing like on Greubel Forsey watches instead of geneva stripes? Just wondering. Some people like the frosted finishing better (I'm not one of them) so thought I'd ask this in case you ever make a custom ordered watch in ...
Pure poetry
By: Ophiuchus : March 14th, 2009-02:54
To actually see the work you put into each piece is a glorious thing indeed. To me, it's mechanical poetry in motion- always striving for that moment when the true surface of the parts is found. Just like hitting the final facet on my stones, you must rea...